[JAXME-46] NullPointerException Error

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: current (nightly)
• Component/s: JaxMe Core
• Environment: Windows 2000, java sdk 1.5
• Assignee: Jochen Wiedmann
• Reporter: Angelo
• Created: 02/Dec/04 17:01
• Updated: 04/Dec/04 23:26
• Resolved: 04/Dec/04 23:26

Description

I received this error:

BUILD FAILED
build.xml:44: java.lang.NullPointerException
at org.apache.ws.jaxme.generator.XJCTask.execute(XJCTask.java:958)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at org.apache.tools.ant.Project.executeTargets(Project.java:1062)
at org.apache.tools.ant.Main.runBuild(Main.java:673)
at org.apache.tools.ant.Main.startAnt(Main.java:188)
at org.apache.tools.ant.Main.start(Main.java:151)
at org.apache.tools.ant.Main.main(Main.java:241)
Caused by: java.lang.NullPointerException
at org.apache.ws.jaxme.generator.sg.impl.JAXBAttributeSG.<init>(JAXBAttributeSG.java:62)
at org.apache.ws.jaxme.generator.sg.impl.JAXBComplexTypeSG.newAttributeSG(JAXBComplexTypeSG.java:116)
at org.apache.ws.jaxme.generator.sg.impl.ComplexTypeSGImpl.newAttributeSG(ComplexTypeSGImpl.java:101)
at org.apache.ws.jaxme.generator.sg.impl.JAXBComplexTypeSG.initAttributes(JAXBComplexTypeSG.java:130)
at org.apache.ws.jaxme.generator.sg.impl.JAXBComplexTypeSG.init(JAXBComplexTypeSG.java:163)
at org.apache.ws.jaxme.generator.sg.impl.ComplexTypeSGImpl.init(ComplexTypeSGImpl.java:29)
at org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.init(JAXBTypeSG.java:221)
at org.apache.ws.jaxme.generator.sg.impl.TypeSGImpl.init(TypeSGImpl.java:119)
at org.apache.ws.jaxme.generator.sg.impl.JAXBSGFactory.getTypeSG(JAXBSGFactory.java:237)
at org.apache.ws.jaxme.generator.sg.impl.SGFactoryImpl.getTypeSG(SGFactoryImpl.java:53)
at org.apache.ws.jaxme.generator.sg.impl.JAXBObjectSG.<init>(JAXBObjectSG.java:117)
at org.apache.ws.jaxme.generator.sg.impl.JAXBObjectSG.<init>(JAXBObjectSG.java:75)
at org.apache.ws.jaxme.generator.sg.impl.JAXBSGFactory.newObjectSG(JAXBSGFactory.java:123)
at org.apache.ws.jaxme.generator.sg.impl.SGFactoryImpl.newObjectSG(SGFactoryImpl.java:109)
at org.apache.ws.jaxme.generator.sg.impl.JAXBSGFactory.getObjectSG(JAXBSGFactory.java:129)
at org.apache.ws.jaxme.generator.sg.impl.SGFactoryImpl.getObjectSG(SGFactoryImpl.java:65)
at org.apache.ws.jaxme.generator.sg.impl.JAXBSchemaSG.getElement(JAXBSchemaSG.java:193)
at org.apache.ws.jaxme.generator.sg.impl.SchemaSGImpl.getElement(SchemaSGImpl.java:38)
at org.apache.ws.jaxme.generator.sg.impl.JAXBSchemaSG.init(JAXBSchemaSG.java:128)
at org.apache.ws.jaxme.generator.sg.impl.SchemaSGImpl.init(SchemaSGImpl.java:114)
at org.apache.ws.jaxme.generator.sg.impl.JAXBSGFactory.getSchemaSG(JAXBSGFactory.java:170)
at org.apache.ws.jaxme.generator.sg.impl.SGFactoryImpl.getSchemaSG(SGFactoryImpl.java:101)
at org.apache.ws.jaxme.generator.sg.impl.JAXBSchemaReader.parse(JAXBSchemaReader.java:117)
at org.apache.ws.jaxme.generator.impl.GeneratorImpl.generate(GeneratorImpl.java:125)
at org.apache.ws.jaxme.generator.impl.GeneratorImpl.generate(GeneratorImpl.java:154)
at org.apache.ws.jaxme.generator.XJCTask.execute(XJCTask.java:942)
... 10 more

this is the ant debug:
...
...
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBSchemaSG.init]
Childorg.apache.ws.jaxme.xs.jaxb.impl.JAXBElementImpl@14384c2
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBObjectSG.<init>(XSObject,Context)] ->,

{http://www.cnipa.it/schemas/2003/eGovIT/Busta1_0/}

Riferimento, null
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.init] ->
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBComplexTypeSG.<init>(XSType)] ->, org.apache.ws.jaxme.generator.sg.impl.TypeSGImpl@1c0ec97, org.apache.ws.jaxme.xs.jaxb.impl.JAXBTypeImpl@ecb281
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBComplexTypeSG.<init>(XSType)] <-, org.apache.ws.jaxme.generator.sg.impl.GlobalContext@1bb60c3 [

{http://www.cnipa.it/schemas/2003/eGovIT/Busta1_0/}

Riferimento,org.prova.helper.RiferimentoType,org.prova.helper.impl.RiferimentoTypeImpl]
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBSGFactory.getTypeSG(XSType)] ->,

{http://www.w3.org/2001/XMLSchema}

anyURI
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBSGFactory.getTypeSG(XSType,ClassContext)] ->, org.apache.ws.jaxme.xs.types.XSAnySimpleType@5a9de6, null
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.init] ->
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.newSimpleTypeSG] ->
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.newSimpleTypeSG] <-, org.apache.ws.jaxme.generator.types.StringSG@cdb06e
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.init] <-
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBSGFactory.getTypeSG(XSType,ClassContext)] <-, org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG@1fa1bb6, org.apache.ws.jaxme.generator.sg.impl.TypeSGImpl@1315d34
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.init] ->
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.newSimpleTypeSG] ->
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.newSimpleTypeSG] <-, org.apache.ws.jaxme.generator.types.StringSG@1de256f
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG.init] <-
[xjc.org.apache.ws.jaxme.generator.sg.impl.JAXBSGFactory.getTypeSG(XSType)] <-, org.apache.ws.jaxme.generator.sg.impl.JAXBTypeSG@16bd8ea, org.apache.ws.jaxme.generator.sg.impl.TypeSGImpl@16e1fb1

and this the XSD:

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="http://www.cnipa.it/schemas/2003/eGovIT/Busta1_0/"
xmlns:eGov_IT="http://www.cnipa.it/schemas/2003/eGovIT/Busta1_0/"
xmlns="http://www.cnipa.it/schemas/2003/eGovIT/Busta1_0/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">

<xsd:import
namespace="http://schemas.xmlsoap.org/soap/envelope/"
schemaLocation="soap.xsd"/>

<xsd:element name="Azione" type="xsd:string"/>
<xsd:element name="Collaborazione" type="eGov_IT:IdentificatoreType"/>
<xsd:element name="ConfermaRicezione">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="eGov_IT:OraRegistrazione"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="Descrizione">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="unbounded"
ref="eGov_IT:DescrizioneMessaggio"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="DescrizioneMessaggio">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="eGov_IT:Riferimento"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="Destinatario">
<xsd:complexType>
<xsd:sequence>
<xsd:element
ref="eGov_IT:IdentificativoParte"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="Destinazione">
<xsd:complexType>
<xsd:sequence>
<xsd:element
ref="eGov_IT:IdentificativoParte"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:simpleType name="codiceEccezioneType">
<xsd:restriction base="xsd:string">
<xsd:enumeration value="EGOV_IT_001">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_002">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_003">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_100">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_101">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_102">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_103">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_104">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_105">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_106">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_107">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_108">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_109">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_110">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_111">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_112">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_113">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_114">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_115">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_116">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_117">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_118">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_119">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_120">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_200">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_201">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_202">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_203">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_300">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_301">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_400">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_401">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
<xsd:enumeration value="EGOV_IT_402">
<xsd:annotation>
<xsd:appinfo/>
</xsd:annotation>
</xsd:enumeration>
</xsd:restriction>
</xsd:simpleType>
<xsd:element name="Eccezione">
<xsd:complexType>
<xsd:attribute name="contestoCodifica"
type="xsd:string" use="required"/>
<xsd:attribute
name="codiceEccezione"
type="eGov_IT:codiceEccezioneType"
use="required"/>
<xsd:attribute name="rilevanza" use="required">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:enumeration value="INFO"/>
<xsd:enumeration value="LIEVE"/>
<xsd:enumeration value="GRAVE"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:attribute>
<xsd:attribute name="posizione"
type="xsd:string" use="required"/>
</xsd:complexType>
</xsd:element>
<xsd:element name="IdentificativoParte">
<xsd:complexType>
<xsd:simpleContent>
<xsd:extension base="xsd:string">
<xsd:attribute name="tipo"
type="xsd:string" use="required"/>
<xsd:attribute name="indirizzoTelematico"
type="xsd:string"/>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>
</xsd:element>
<xsd:element name="Identificatore"
type="eGov_IT:IdentificatoreType"/>
<xsd:simpleType name="IdentificatoreType">
<xsd:restriction base="xsd:string">
<xsd:pattern
value="[\w][\w]\d

{7}\d{4}-\d{2}-\d{2}\d{2}:\d{2}"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:element name="Intestazione">
<xsd:complexType>
<xsd:sequence>
<xsd:element
ref="eGov_IT:IntestazioneMessaggio"/>
<xsd:element minOccurs="0"
ref="eGov_IT:ListaRiscontri"/>
<xsd:element minOccurs="0"
ref="eGov_IT:ListaTrasmissioni"/>
<xsd:element minOccurs="0"
ref="eGov_IT:ListaEccezioni"/>
</xsd:sequence>

<!-- <xsd:attribute
fixed="http://www.cnipa.it/eGov_it/portadominio"
ref="SOAP-ENV:actor"
use="required"/> -->
</xsd:complexType>
</xsd:element>
<xsd:element name="IntestazioneMessaggio">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="eGov_IT:Mittente"/>
<xsd:element ref="eGov_IT:Destinatario"/>
<xsd:element minOccurs="0"
ref="eGov_IT:ProfiloCollaborazione"/>
<xsd:element minOccurs="0"
ref="eGov_IT:Collaborazione"/>
<xsd:element minOccurs="0"
ref="eGov_IT:Servizio"/>
<xsd:element minOccurs="0"
ref="eGov_IT:Azione"/>
<xsd:element ref="eGov_IT:Messaggio"/>
<xsd:element minOccurs="0"
ref="eGov_IT:ProfiloTrasmissione"/>
<xsd:element minOccurs="0"
ref="eGov_IT:Sequenza"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="ListaEccezioni">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="unbounded"
ref="eGov_IT:Eccezione"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="ListaRiscontri">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="unbounded"
ref="eGov_IT:Riscontro"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="ListaTrasmissioni">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="unbounded"
ref="eGov_IT:Trasmissione"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="Messaggio">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="eGov_IT:Identificatore"/>
<xsd:element ref="eGov_IT:OraRegistrazione"/>
<xsd:element minOccurs="0"
ref="eGov_IT:RiferimentoMessaggio"/>
<xsd:element minOccurs="0"
ref="eGov_IT:Scadenza"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="Mittente">
<xsd:complexType>
<xsd:sequence>
<xsd:element maxOccurs="unbounded"
ref="eGov_IT:IdentificativoParte"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="OraRegistrazione">
<xsd:complexType>
<xsd:simpleContent>
<xsd:extension base="xsd:dateTime">
<xsd:attribute name="tempo"
use="required">
<xsd:simpleType>
<xsd:restriction
base="xsd:string">
<xsd:enumeration
value="EGOV_IT_Locale"/>
<xsd:enumeration
value="EGOV_IT_SPC"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:attribute>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>
</xsd:element>
<xsd:element name="Origine">
<xsd:complexType>
<xsd:sequence>
<xsd:element
ref="eGov_IT:IdentificativoParte"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:simpleType name="ProfiloCollaborazioneBaseType">
<xsd:restriction base="xsd:string">
<xsd:enumeration
value="EGOV_IT_MessaggioSingoloOneWay"/>
<xsd:enumeration
value="EGOV_IT_ServizioSincrono"/>
<xsd:enumeration
value="EGOV_IT_ServizioAsincronoSimmetrico"/>
<xsd:enumeration
value="EGOV_IT_ServizioAsincronoAsimmetrico"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:element name="ProfiloCollaborazione">
<xsd:complexType>
<xsd:simpleContent>
<xsd:extension
base="eGov_IT:ProfiloCollaborazioneBaseType">
<xsd:attribute name="servizioCorrelato"
type="xsd:string"/>
<xsd:attribute name="tipo">
<xsd:simpleType>
<xsd:restriction
base="xsd:string">
<xsd:enumeration value="URL"/>
<xsd:enumeration
value="WSDL"/>
<xsd:enumeration
value="LDAP"/>
<xsd:enumeration
value="UDDI"/>
<xsd:enumeration
value="ebXMLRegistry"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:attribute>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>
</xsd:element>
<xsd:element name="ProfiloTrasmissione">
<xsd:complexType>
<xsd:attribute default="EGOV_IT_PIUDIUNAVOLTA"
name="inoltro">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:enumeration
value="EGOV_IT_ALPIUUNAVOLTA"/>
<xsd:enumeration
value="EGOV_IT_PIUDIUNAVOLTA"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:attribute>
<xsd:attribute default="false"
name="confermaRicezione" type="xsd:boolean"/>
</xsd:complexType>
</xsd:element>
<xsd:element name="Riferimento">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="eGov_IT:Schema"/>
<xsd:element ref="eGov_IT:Titolo"/>
</xsd:sequence>
<xsd:attribute name="href" type="xsd:anyURI"
use="required"/>
<xsd:attribute name="role" type="xsd:string"
use="required"/>
<xsd:attribute ref="eGov_IT:id" use="required"/>
</xsd:complexType>
</xsd:element>
<xsd:element name="RiferimentoMessaggio"
type="eGov_IT:IdentificatoreType"/>
<xsd:element name="Riscontro">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="eGov_IT:Identificatore"/>
<xsd:element ref="eGov_IT:OraRegistrazione"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="Scadenza" type="xsd:dateTime"/>
<xsd:element name="Schema">
<xsd:complexType>
<xsd:attribute name="posizione"
type="xsd:anyURI" use="required"/>
</xsd:complexType>
</xsd:element>
<xsd:element name="Sequenza">
<xsd:complexType>
<xsd:attribute name="numeroProgressivo"
use="required">
<xsd:simpleType>
<xsd:restriction
base="xsd:positiveInteger">
<xsd:pattern value="\d{7}

"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:attribute>
</xsd:complexType>
</xsd:element>
<xsd:element name="Servizio">
<xsd:complexType>
<xsd:simpleContent>
<xsd:extension base="xsd:string">
<xsd:attribute name="tipo"
type="xsd:string" use="required"/>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>
</xsd:element>
<xsd:element name="Titolo">
<xsd:complexType>
<xsd:simpleContent>
<xsd:extension base="xsd:string">
<xsd:attribute default="it"
name="Lingua" type="xsd:language"/>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>
</xsd:element>
<xsd:element name="Trasmissione">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="eGov_IT:Origine"/>
<xsd:element ref="eGov_IT:Destinazione"/>
<xsd:element ref="eGov_IT:OraRegistrazione"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:attribute name="id" type="xsd:ID"/>
</xsd:schema>

the error seems to be here:
...
...
<xsd:element name="Riferimento">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="eGov_IT:Schema"/>
<xsd:element ref="eGov_IT:Titolo"/>
</xsd:sequence>
<xsd:attribute name="href" type="xsd:anyURI"
use="required"/>
<xsd:attribute name="role" type="xsd:string"
use="required"/>
<xsd:attribute ref="eGov_IT:id" use="required"/>
...
...

Thanks